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Re: I-D Action: draft-ietf-6man-ipv6only-flag-03.txt

Nick Hilliard <nick@foobar.org> Tue, 23 October 2018 09:32 UTC

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Subject: Re: I-D Action: draft-ietf-6man-ipv6only-flag-03.txt
To: Mark Smith <markzzzsmith@gmail.com>
Cc: Tim Chown <Tim.Chown@jisc.ac.uk>, 6man WG <ipv6@ietf.org>
References: <153973137181.9473.10666616544238076833@ietfa.amsl.com> <092346e1-6350-e54e-e711-9c5ee6dc4e6b@gmail.com> <4a883ed6-c0d7-5d3f-9657-3ba0476919e0@foobar.org> <6952EE88-B3D6-48BC-ACFF-C5248965EDC9@employees.org> <61706f85-cf3a-1a03-0371-30fe3eaaec6f@foobar.org> <2afa8333-fad3-3a26-0466-2ed3bd1e0c9c@gmail.com> <alpine.DEB.2.20.1810220719580.26856@uplift.swm.pp.se> <79607436-EF99-4571-B99C-B2ACA5DE3E23@jisc.ac.uk> <CAO42Z2ws=J=Jmww=FoQiZLz=RHBakTOOxKTYS9UP87uKa7XbuA@mail.gmail.com>
From: Nick Hilliard <nick@foobar.org>
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Date: Tue, 23 Oct 2018 10:32:07 +0100
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Mark Smith wrote on 23/10/2018 00:04:
> I don't have experience with them (been in carrier/ISP land for a
> quite a while) or knowledge of how widely it is used, however
> enterprise Wifi APs look to be performing ARP caching to reduce
> link-layer broadcast traffic, which is IPv4 state being maintained in
> a layer 2 device. e.g.

arp proxying can be implemented on several types of network devices 
(wifi APs, evpn l2 domain edge ports, etc). This is handled in the 
management plane of those devices and does not impact on the forwarding 
plane capacity, i.e. it is not affected by the number of ipv4/mac 
mapping entries in any meaningful way.  It's a non issue.

Nick

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